Corrugated culvert.



F. J. PELDT.

CORRUGATED CULVERT.

APPLICATION FILED M1112, 1911.

v Patented July 4,1911.

INvfNTol En y K/ WITNSSES @ERICE LDT, l0F PEORIA, ILLINOI `rnitnrivaiin a. Tn s.

CORRUGATED CULVERT.

Specification oflLetters Patent. Application tiled April 12, 1911.

- Patent Serial No. 620,570.

`996,708. ed J illy 4, 1911'.

To ot wiom 'it may concern.' portion terminating in the outwardly liared Be itknown that LFERDINAND J. lieLo'r, j flange 6 and the entering end thereof with citizen of the United States residing at a plain flat end portion, both as shown in Peoria, in the county of Peoria and State Fig. l. The threads are Ithen formed in each of inois have invented certain new and of the ends7 resulting in the formation of the useful In'iproveinents in Corrugated Cullhieads 4 anc 5 as siown in Fig. 3. The verts, of which the following is a specilieffect of forming thefeinale thread caused cation. by the entry of the roller working in con- My invention relates to corrugated culjunction with a die is to bend a portion of vertstie edge of flange G inwardlyas at 8 (see The object of niy invention is to provide Fig. 4). lVhen the fcniale thread is lina simple and convenient meansl for uniting ished, the inner face of the threaded portion corrugated sections together to produce is in a slightly higher plane than the plane diifcrent lengths required in use. of the lower extreinity'of the trough corru 'My invention consists inthe particular gations 3 of the sections. The iesiilt lof ormation of threaded connections in planes relative to the principal corrugations of the ion is to leave the inner face ,of the sections; the forming of an outwardly threaded portion substantially in the same turned flange upon one end of each section plane as the lowest point of the trough porand an inturn at the opposite end of each ionv3 of the main coi'rugations, with the Section, and the bending of a portion of the terminal inwardly turned portion 7 some# out-turned flange from its norinal line to what below that plane. assist in locking interengaged sections. lVhen the `sections are screwed together, Re erring to the drawings, Figure l is a the liange 6 will bear against the final ridgel'/ side elevation of portions of corrugated culcorrugation at the entry end of joined seevert sections showing the formation of intions and the inwardly turned portion 7 of tended meeting end portions beforethe joinhe entry end of a joined adjacent section jug means is fol-med thereon; Fig. 2 is a I will bear against the face of thetrough'porsectional view of .portions of corrugated tion of the linal corrugation of the receiving tubular sections adapted to be joined toend of an adjacent section. nysagging efgether; Fig. 3 is a side elevationpf a. por- .feet resulting from lost motion between the tion of two corrugated se Athreaded pa gether,a portion beingbroken'away to show ing oiange 6 an inturned portion V7 the interlocking joint; and Fig.4 is an end against the inain corrueated parts, When view'of a portion of a section showing a the lsections aie screwed together as shown in liange and the entry effect thereon occaiig-3, the inturned portion of flange 6 will sionedin forming the thread .therein be forced outwardly and the tension of the In the drawings, Qiare corrugated secmetal against the coirugation of the adja ions. cent section will assist in locking the sections 3 are the-ridge and 3 the trough portions together.

`v W hat I claimsI is: In a culvert, a

of the corrugations.

l are female threads and 5 plurality of corrugated respectively at opposite ends of each section. Sections eachprovided at one cud with an is an out-turned flange at the receiving out-turned'flange and with a female threadend of t-he section and 7'is an inturn at the ed portion interposed between said liange entry end thereof. and the final cori-ligation of saidend poriefers to a portion of iiange 6 that is tion, the opposite end of each section proent inwardly from the ellect of entry of a Avided with an'infturned flange and with a ro er working in conjunction with a 'die male threadt ereoninterposed between said to forni thread Il. ange and the linal corrugation 4of said end is intended'to show the entryelfect portion. of the roller in forming threadfi'and is l 2. In a culvert, Va plurality of corrugated somewhat exaggerated for the purpose of sections cach provided at one end with an. illustration. i out-turned flange bent inwardly at its edge The respect-'ve ends of sections 2 are first fora portion of its length and with a Afemale former threaded portionV interposed between said l, the receiving end with affiatfnoe portion.

. sections and the e.;treine outer edge of said sections, each provided at one end with a female thread, the inner faces pf the trough formed into an outwardly\ turned flange extendihg entirely QP 'a male thread, the inner faces of sections, each provided atene end with a female thread, the inner faces of the trough portions thereof lying in `a plane above the inner faces of the trough portions of the corrugations of the sections and the extreme outer edge of said end portion formed into an outwardly7 turned flange extending entirely around said section, said flange bent inwardly for a portionof its length to provide an impinging surface, the opposite'end of each section provided with a male thread, the inner faces of the threads lying in substantially the same 'plane as the inner faces of the trough portions of the corrugations of the sections and the extreme outer edge of said end portion formed into an inwardly turned flangeextending-,entirely around said section, whereby a ready entrance of sections adapted to be joined may be effected and may be united by screwing one and the inwardly and outwardly turne ange portions respectively will, ywhen the sections are joined together, engage the walls of the final corrugation of the respective sections.

flange and the inal corrugation of said end portion, the 'oppositeendof each section provided with an in-turned flange and with a male thread thereon interposed between said flange and the final corrugation of said end 3. In a culvert, a plurality of corrugated ortionsthereof lying in a plane above the inner faces of the trough portions of\ the corrugat-ions of the sect-ions andthe eX- treme outer edge of said end portion around said section, the 'ach section provided with the trough portions of vthe threads lying substantially in the same plane as the inner faces of the trough portions of the corrugations of the osite end of end portion formed into an inwardly turned flange extending entirely around said section, whereby a ready entrance of sections adapted to be joined may be effected and may be united by screwing one end portion into the other, and the inwardly and outwardly turned flange portions respectively will, when the sections are joined together, engage the walls of the final corrugation of the respective sections,

4. In a culvert, a plurality of corrugated presence of two witnesses.

signature in y FERDINAND J. FELDT.y

r`7Vitnesses:

W. V. Tnrrr, MARY E. Connors.

iuef.

the trough portions of In testimony whereof I have afzged my end portion into the othei y 

